Medium
Security advisory
A heap-based buffer overflow was found in QEMU through 5.0.0 in the SDHCI device emulation support. It could occur while doing a multi block SDMA transfer via the sdhci_sdma_transfer_multi_blocks() routine in hw/sd/sdhci.c. A guest user or process could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition, or potentially execute arbitrary code with privileges of the QEMU process on the host.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2020-17380
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 06:32 UTC · Revision 1
Source evidence
A heap-based buffer overflow was found in QEMU through 5.0.0 in the SDHCI device emulation support. It could occur while doing a multi block SDMA transfer via the sdhci_sdma_transfer_multi_blocks() routine in hw/sd/sdhci.c. A guest user or process could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition, or potentially execute arbitrary code with privileges of the QEMU process on the host.
osv:CVE-2020-17380
Complete source record
{
"id": "6bfaebbf865337e230cbaf2e55e1746cdbbb5eb48f7a308659fbac2b61ef3798",
"url": "https://osv.dev/vulnerability/CVE-2020-17380",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2020-17380",
"summary": "A heap-based buffer overflow was found in QEMU through 5.0.0 in the SDHCI device emulation support. It could occur while doing a multi block SDMA transfer via the sdhci_sdma_transfer_multi_blocks() routine in hw/sd/sdhci.c. A guest user or process could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition, or potentially execute arbitrary code with privileges of the QEMU process on the host.",
"evidence": "osv:CVE-2020-17380",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2020-17380",
"aliases": [
"CVE-2020-17380"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L"
}
],
"affected": [
{
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"type": "GIT",
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],
"modified": "2026-10-24T10:30:40.819823268Z",
"provider": "osv",
"references": [
"https://lists.debian.org/debian-lts-announce/2021/04/msg00009.html",
"https://security.netapp.com/advisory/ntap-20210312-0003/",
"https://bugzilla.redhat.com/show_bug.cgi?id=1862167",
"https://lists.nongnu.org/archive/html/qemu-devel/2020-09/msg01175.html"
],
"provider_metadata": {
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{
"cpes": [
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],
"vendor_product": "debian:debian_linux",
"extracted_events": [
{
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},
{
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],
"source": "CPE_STRING"
}
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}
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}
},
"related_cves": [
{
"value": "CVE-2020-17380",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 435015,
"published_at": "2021-01-30T06:15:12.647+00:00"
}